Title |
Lipid Droplets: A New Player in Colorectal Cancer Stem Cells Unveiled by Spectroscopic Imaging
|
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Published in |
Stem Cells, December 2014
|
DOI | 10.1002/stem.1837 |
Pubmed ID | |
Authors |
Luca Tirinato, Carlo Liberale, Simone Di Franco, Patrizio Candeloro, Antonina Benfante, Rosanna La Rocca, Lisette Potze, Roberto Marotta, Roberta Ruffilli, Vijayakumar P Rajamanickam, Mario Malerba, Francesco De Angelis, Andrea Falqui, Ennio Carbone, Matilde Todaro, Jan Paul Medema, Giorgio Stassi, Enzo Di Fabrizio |
Abstract |
The cancer stem cell (CSC) model is describing tumors as a hierarchical organized system and CSCs are suggested to be responsible for cancer recurrence after therapy. The identification of specific markers of CSCs is therefore of paramount importance. Here, we show that high levels of lipid droplets (LDs) are a distinctive mark of CSCs in colorectal (CR) cancer. This increased lipid content was clearly revealed by label-free Raman spectroscopy and it directly correlates with well-accepted CR-CSC markers as CD133 and Wnt pathway activity. By xenotransplantation experiments, we have finally demonstrated that CR-CSCs overexpressing LDs retain most tumorigenic potential. A relevant conceptual advance in this work is the demonstration that a cellular organelle, the LD, is a signature of CSCs, in addition to molecular markers. A further functional characterization of LDs could lead soon to design new target therapies against CR-CSCs. Stem Cells 2015;33:35-44. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 2 | 25% |
India | 1 | 13% |
Italy | 1 | 13% |
Unknown | 4 | 50% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 6 | 75% |
Scientists | 1 | 13% |
Science communicators (journalists, bloggers, editors) | 1 | 13% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Germany | 1 | <1% |
France | 1 | <1% |
United Kingdom | 1 | <1% |
Iran, Islamic Republic of | 1 | <1% |
United States | 1 | <1% |
Unknown | 204 | 98% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 51 | 24% |
Researcher | 37 | 18% |
Student > Master | 33 | 16% |
Student > Bachelor | 13 | 6% |
Student > Doctoral Student | 10 | 5% |
Other | 24 | 11% |
Unknown | 41 | 20% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 61 | 29% |
Agricultural and Biological Sciences | 40 | 19% |
Medicine and Dentistry | 16 | 8% |
Chemistry | 9 | 4% |
Physics and Astronomy | 6 | 3% |
Other | 28 | 13% |
Unknown | 49 | 23% |